We developed a new website for our company. The old website work on Joomla 2.5, for example https://www.company.com. Page www.company.com/administrator closed by password via .htaccess
The new website we developed on Joomla 3.9, placed it on a temporary separate domain, for example http://www.test.com. This website disallowed for indexing by robots.txt. Page www.test.com/administrator is available without a password .htaccess. Https version is available only via self-signed certificate. The new website is radically different design.
I can't find the true cause.
- The message in the browser: Deceptive website ahead
- The message in Google Search Console: Harmful content
- The message in Virustotal (Google Safebrowsing): Phishing
I am afraid to upload the new website to the main domain.
Can the new website be blacklisted on the primary domain?
How to determine the exact cause for blocking?
Is the default page for Joomla /administrator has security problems, and google blocks the whole website?